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September 8, 2025 27 mins

You know the feeling you get in your belly when falling on a rollercoaster? Ever wondered why we get similar gut feelings when we're "falling" in love?  In this episode, Brennan (a gastroenterologist) and Lachlan (a cognitive scientist) talk about how gravity shapes gastrointestinal function and what relation gut feelings have to physical and mental health. They discuss Brennan's viral scientific paper, "Gravity and the Gut: A Hypothesis of Irritable Bowel Syndrome" and Lachlan's breakthrough theory of the mind called "Mental Gravity", and the connections between their shared ideas. Conditions like IBS often lead to anxiety and depression, which are the mental equivalent of "falling" and having "fallen", and so they draw a connection between gut health, gut feelings, and mental health. Strap yourself in for a rollercoaster ride through the topsy-turvy world of gut feelings in both body and mind.

Order Brennan's book "Pull" to learn more about how gravity shapes your health in both body and mind via his personal personal website.

Visit Lachlan's website to learn more about his work in mental gravity.

Music by ALLIRA and Visceral Sound.

This episode was recorded at ⁠Myst Music⁠.

Thanks to Jeremy Roberts for audio engineering.


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